Lock.



S. W. CHAPMAN.

LOCK.

AIILIUA'IIOII FILED MAY 8,1914v 1,120,280. Patented Dec.8,1914.

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Gnome THE NORRIS PETERS Cb PHOTILLITHJ. WASHINGION4 D, c.

SILAS W. CHAPMAN, 0F ATLANTIC CITY, NEW JERSEY.

LOCK.

Specification of Letters Patent.

Patented Dec. 8, 1914.

Application filed May 8, 1914. Serial No. 837,236.

To all whom it may concern Be it known that I, SILAS WV. CHAPMAN, acitizen of the United States, residing at Atlantic City, in the countyof Atlantic and State of New Jersey, have invented certain new anduseful Improvements in Locks, of which the following is a specification,reference being had to the accompanying drawings.

This invention relates to new and useful improvements in looks and moreparticularly to a combination lock, the main ob ect of the inventionbeing the provision oi a lock which is particularly adapted for use upontool chests and objects of a like character and includes a casing,pivoted locking members arranged therein, dials arranged upon the outerside of the casing and adapted to be rotated, and means whereby to actuate the locking members and disengage the same from their keepers inorder to un lock the tool chest or other casing.

Another object of the present invention is the provision of acombination lock of the above character which will possess advantages inpoints of efficiency and durability, is inexpensive to manufacture and,at the same time, is simple in construction and operation.

WVith the above and other objects in view, the invention consists in thenovel features; of construction, combination and arrange ment of partsas will be hereinafter referred to and more particularly pointed out inthe specification and claims. D

In the accompanying drawing iorming a part of this application, Figure 1is a front elevation of a combination lock constructed in accordancewith my invention. Fig. 9. is a longitudinal sectional view of the same.Fig. 3 is a sectional view taken on the line 3-3 of Fig. 2; and Fig. 1is a detail front elevation of a tool chest illustrating the upplication oi my improved lock.

In carrying out my invention, provide a casing 1 which is arrangedwlthin a recess formed in the side wall of the chest and ar ranged uponthe outer side of the side wall of the chest, is a plate 2, upon whichthe dials 3 and 4 are mounted. Mounted for rotation within the casing 1,are the tumblers 5 and 6, the tumbler 6 being mounted within the tumblerfiend each of the tumblers being provided with openings 7 adapted to bebrought into alinement, through which the arms 8 are movable, inorder toengage the pivoted locking bars 9 and actuate the same.

The arms 8 are pivoted to the rotary S- shaped member 10 which ismounted within the inner tumbler (3 and is rotated by means of a handlemember 11 formed upon the outer end oi? the rod 12, upon which the S-shaped member 10 is mounted. Spring members secured to the member 10 andthe outer ends thereof are adapted to bear against the arm 8 in order toyicldably re tain the same into engagement with the inner walls of theinner sleeve, so that when the openings in the two sleeves are broughtinto alinement, the arms 8 will readily pass therethrough and beassisted by the action of the springs. Suitable stops 13 are formedintegral with one side of the casing and are adapted to be engaged bythe ends of the S-shaped member to limit the rotary movement of thesame. Lugs 14L are also formed integral with the casing and projectinwardly and are adapted to engage the pivoted locking mcn'lbers 9 inorder to limit the movement of the same, said locking members beingretained in a. normally locked position by means oi the coil spring 15,the ends of which are secured to the locking members adjacent theirouter ends. Formed integral with the tumblers 5 and 6, are the reducedsleeves 16 and 17 which pro ject outwardly and are mounted upon theinwardly projecting sleeves 18 and 18 which are formed integral with themovable dials and 1, whereby upon the rotary movement of the dials, thetmnblers 5 and 6 will be rotated to bring the openings 7 therein intoalincment so that the arms 8 may be actuated therethrough and engage thepivoted locking members 9 to release the same. The sleeve 16 which ismounted upon the sleeve 18 is provided with a set screw 19 whereby thecombination may be changed, if so desired. The sleeve 17 is also securedto the sleeve 18' on the dial .t by means of a set screw, the purpose ofwhich is obvious from the above.

As illustrated in the accompanying drawing, the larger dial 3 isprovided with a number of graduations having numerals arranged oppositethe graduations, while the inner dial is provided with letters and thegraduations thereon are adapted to be arranged in registered positionwith the graduations upon the outer dial, so that upon the registeringof any of the predetermined graduations, the openings 7 will. be broughtinto a registering position, so that the arms 8 may be movedtherethrough and engage the pivoted locking members 9. ample, asillustrated in the accompanying drawing, the graduations upon the outerdial are indicated by the numerals 1 to 8 and the graduations upon theinner dial are inclicated by the letters A to H and it will be notedthat the combination of the lock illustrated in the accompanying drawingis so arranged that the dials will be rotated until the figure 1 will bebrought into registration with the character A and so on, so that theopenings 7 will register to allow the arms 8 to move therethrough andengage the pivot ed locking members 9. It will be apparent that theregistry lines indicating figure 1 and the character A will be broughtinto alinement with an arrow or other indicating point upon the face ofplate 2 before the openings in the sleeves will be brought intoalinement. Should it be desired to change the combination, the set screw19 may be loosened to allow the rotary adjustment of the dial 3, so thatthe combination may be readily changed, if desired.

The locking members 9 are provided at their outer ends with hookportions 20 which are adapted to engage within the perforated keepers 21formed upon the outer face of the plate 22, said plate being secured tothecover of the device in any suitable manner. The keeper members 21 aremovable through suitable openings 23 which are formed, in one end of thecasing, so that the keeper mem bers may be readily engaged with the hookportions 20. It will be apparent that the outer faces of the lockingmembers 9 are beveled, as shown at 24:, so that when the keepers areinserted through the openings 23, the hook portions may be readilyforced outwardly against the tension of the spring 15 and yieldablyengage with the keepers 21.

It will be apparent from the foregoing description, taken in connectionwith the drawing, that the operation of my improved lock is as follows:'After the dial 3 has been adjusted to any desired combination, thedials are rotated until the predetermined graduations are brought intoalinement, which will position the openings 7, so that the arms 8 maypass therethrough and engage with the pivoted lockingmembers 9. Afterthe dials have been brought into position, the handle member 11 isgrasped so that the S-Shaped member 10 may be rotated and project thearms 8 through the openings 7. Upon the engagement of the arms 8, withthe pivoted locking members 9, the hooks 2 will be disengaged from thekeepers 21 to release'thecover of the boX or other device upon which thelock is applied.

It will be apparent from the above that my improved lock isextremelysimple in construction, and can be manufactured and For eX- I placedupon the market at a comparatively low cost.

\Vhile I have shown and preferred form of my invention, it will beobvious that various changes in the details of construction may beresorted to for successfully carrying my invention into practice,without sacrificing any of the novel features or departing from thescope of the invention as defined by the appended claims.

Having thus described this invention, what I claim is 1. A device of theclass described including movable tumblers, alined openings formedtherein, means for rotating said tumblers and drawing the openings intoalinement, pivotal locking members arranged upon each side of thetumblers, an S- shaped member arranged within said tumblers, outwardlyprojecting arms formed upon the ends of said member and adapted to bemovably disposed through the openings in said tumblers and engaged withthe pivotal locking members, as and for the purpose set forth.

2. A device of the class described including a casing, tumblers mountedwithin saidcasing, having openings formed therein, pivoted lockingmembers arranged within the casing upon opposite sides of the tumblers,an S-shaped member arranged within said tumblers, movable arms carriedby said Sshaped member and adapted to extend through said openings whenin an alined position and engage the pivoted locking members, rotatabledials, and means connecting said dials with the tumblers in the casing,as and for the purpose set forth.

3. A device of the class described including a casing, tumblers arrangedwithin said casing, atransverse shaft extending through the tumblers andthe casing, said tumblers having openings formed therein, pivotedlocking members arranged within the casing upon opposite sides of thetumblers, an S- shaped member arranged within said tumblers and monntedupon said shaft, pivoted arms connected to the ends of the S-shapedmember and adapted to extend through said. openings in the tumblers whenin an alined position to engage the pivoted locking-member's, rotatabledials, and means connecting said dials with the tumblers whereby therotation of the dials will bring the openings in the tumblers intoalinement, as and for the purpose set forth.

In testimony whereof I hereunto affix my signature in the presence oftwo witnesses.

SILAS W; CHAPMAN.

Witnesses BENJAMIN VAUGHAN, JAMESA. SIMPsoN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Eatents;

Washington, D. G. t

described the

